11021122012121 has 8 divisors (see below), whose sum is σ = 11869792341960. Its totient is φ = 10172579069952.

The previous prime is 11021122012081. The next prime is 11021122012141. The reversal of 11021122012121 is 12121022112011.

It can be written as a sum of positive squares in 4 ways, for example, as 74526270025 + 10946595742096 = 272995^2 + 3308564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11021122012121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11021122012121.

It is not an unprimeable number, because it can be changed into a prime (11021122012141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31667186 + ... + 32013323.

It is an arithmetic number, because the mean of its divisors is an integer number (1483724042745).

Almost surely, 2^{11021122012121} is an apocalyptic number.

It is an amenable number.

11021122012121 is a deficient number, since it is larger than the sum of its proper divisors (848670329839).

11021122012121 is a wasteful number, since it uses less digits than its factorization.

11021122012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63693835.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11021122012121 its reverse (12121022112011), we get a palindrome (23142144124132).

The spelling of 11021122012121 in words is "eleven trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred twenty-one".